Delivering the best bass output, the Alpine SWR-1243D has been redesigned to enhance audio playback and become your ideal sound system. Type-R's new depth design offers a 20% reduction while adding the new and improved magnet structure. With this updated double-stacked strontium magnet, this product gains over 20% more motor force to provide a louder, cleaner bass. The optimized CRC machined motor creates an even magnetic field to provide the user with less distortion and overall improves the subwoofers power handling. This subwoofer features a High-Amplitude Multi Roll (HAMR) to provide excellent excursion with overall better output. Having a new and improved airflow management system controlling the temperature of the voice coils, the air is redirected across the heatsink to avoid overheating. With heavy playing time, this heatsink feature minimizes the amount of compression to reduce any heat damage to the voice coils giving you a long-lasting subwoofer.

CRC Machined motor structure creates a symmetrical magnetic field for less distortion and improves power handling

High-power, double-stacked strontium magnet structure

Newly redesigned for a 20% depth reduction

Frequency response: 24-200 Hz

Sensitivity: 83 dB

1-year Sonic Electronix warranty

Alpine products are warranted solely by Sonic Electronix, Inc. under the same period and terms as the original Alpine warranty. Sonic Electronix is not an Authorized Alpine Dealer and Alpine requires all merchandise purchased by Sonic Electronix customers to be returned solely to Sonic Electronix. Alpine products are also covered by our Standard Return Policy for returns on exchanges or refunds within 30 days from the date of purchase.

Subwoofer Specifications

Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.

Type-R (Alpine)

Subwoofer Size

Refers to the diameter of the subwoofer, measured in inches.

12"

Peak Power Handling

Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.

1800 watts

RMS Power Handling

The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.

600 watts

Voice Coil(s)

Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.

Dual

Impedance (Per Voice Coil)

The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.

4 ohms

Voice Coil Diameter

Diameter of voice coil, usually measured in inches.

Frequency Response

The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).

24 - 200 Hz

Sensitivity

An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".

85 dB

Xmax (millimeters)

Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.

20 mm

Subwoofer Design

This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle

Main Cone Color

This is the color of the speaker's or subwoofer's cone.

Dark Gray

Woofer Composition

Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.

Kevlar Fiber

Woofer Surround

A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.

Santoprene Rubber

Magnet Structure

Defines the overall structure of the subwoofers magnet.

Subwoofer Grille

Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.

Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.

No

Recommended Enclosure Specifications

Recommended Enclosure Type

This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / VentedSealed

Minimum Sealed Box Volume

This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

0.65 cubic feet

Optimum Sealed Box Volume

This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

Maximum Sealed Box Volume

This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

1.25 cubic feet

Minimum Ported Box Volume

This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

1.0 cubic feet

Optimum Ported Box Volume

This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

Maximum Ported Box Volume

This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

2.0 cubic feet

Top-Mount Depth

The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.

6-3/8"

Cutout Diameter

The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.

10-13/16"

Shallow Mount Installation

This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No

Electromechanical Parameters

Free-Air Resonance (Fs)

The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.

Equivalent Compliance (Vas)

This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.

Total Speaker Q Value (Qts)

This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses.
Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.

Electrical Q Value (Qes)

The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.

Electrical Resistance of Voice Coil (Re)

Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.

Mechanical Q Value (Qms)

This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.

Efficiency Bandwidth Product (EBP)

This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

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More reviews

I have this sub in a sealed box in my truck running at full power and it sounds very good. It doesn't distort at all and the bass hits very hard without any distortion. Highly recommended, I'm very happy with it.

18 of 26 found this helpful

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Have had mine for at least 3 months or so. I have an 1100 watt peak 550 rms amp hooked up to this and I am not gentle with it. Just one 12 in a custom ported box and this blows away my friends two kicker CVRs. Definitely worth spending the extra buck to get these. You wont be disappointed.

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If you want loud get these. They dont change notes very well between high and low hits but they are still loud. If your lokking for everyone around to hear you get these. Two of these in a ported box is all the bass you would ever need.

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I have 2 12s wired down to 1ohm and I almost forgot what these sounded like! I owned 4 ran off 2 1500.1 kicker amps a couple years ago and they were dual 2 ohm wired to 1. Dual 4 put out the same head pounding bass, extreme lows with little or no distortion at high volumes. RE 1500.1 bridged are runnin mine. XS 1200v cell with .5 farad cap and yellow top optima for SERIOUS power. Sealed enclosure for my 97 continental.

11 of 17 found this helpful

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The title says it all! I've had this sub for a day now and I still am surprised that I have all this bass coming from a 10" sub! It hits the highs and nails the lows and fills my whole Subaru with quality bass without rattling the trunk annoyingly. I put this in the sonic sealed box with .75 cubic feet hooked up to my old MTX TN250 Terminator amp and this thing barely takes up any space back there. This sub will not disappoint you!

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Bought this along with an RF Prime R500.1 (528RMS).
At first I had this in a sealed box and I was happy. Then I got a ported 1.8 cu ft box and this thing hits so dang hard. When the back seats are down it shakes my winshield and side mirrors like crazy. So many people ask what I have in back and they are amazed when I tell em its only 1 12". This thing out does 2 kickers easily. Almost nothing can compete with this sub in its range. The only thing that you have to watch on this sub is the low lows. After playin rack city at max volume they started to smell a bit. For all other Hz this thing is a beast.

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I just got finished hooking my 2 alpines up to a hifonics brutus amp at one ohm. Each are getting about 600w rms and they are brutal!!! Would highly recommend these subs to anyone who wants clarity with their hard hitting bass.

6 of 8 found this helpful

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Truly amazing subs these type r's are. Use to have two 12" in my old car hooked up to a 1000 watt rms rockford amp in a ported enclosure and man did these subs slam! For sure the hardest hitting subs I have ever owned. Would recommend these to anyone looking to rattle their brains!

9 of 15 found this helpful

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I have 2 of these with a 3 cubic ft box and 2 Alpine mrx 1000 watt amps and these subs are the best in my town no one can match me and to any one that wants to buy kicker alpine is the way to go plus these things can take a beating.

6 of 9 found this helpful

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These subs can get really loud they can almost handle all the power my bxi2607d puts out at one ohm but I cant run all the power to them.
I would recomend these to someone who likes mid low to mid bass they dont go too low so if your looking for low lows like 5-30 hz look somewhere else I put them in a box that is 3 cubes per chamber tuned at 32 hz and the aw1208t's I had in the same box really hit the lows crazy but these r's they are more for 30-60hz bass that most rap plays and they sound really great just don't hit vary low like i would like or Im used too lol

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I bought two for these subs in June and man do they sound good. Ive never had alpine. Ive had kicker cvrs solo baric cvx Ive also had memphis and to be honest with you nothing has compared to these other than I really liked the solo baric l5. I have the bxi 1610d running two of them in a ported box I dont know the cubic feet of the box lol but the bxi is rated at 1600 rms but ive talked to several at sonic and this amp pushes about 1400 rms but they do hit pretty hard I have 0/1 gauge ran and I upgraded my alternator to 150 amp and I soon will be getting the sk-bt60 and another sub! sonic is a great place to buy from ships fast I would recommend this sub to anyone for the amount of money sonic has them priced at you cant beat it.

3 of 3 found this helpful

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I had a hard time deciding if I should have gotten 2 or just 1. I ended up only getting 1 Alpine Type-R sub and this thing blasts! I'm running it off the Rockford R500 amp and it's perfect. So happy with my purchase.

12 of 21 found this helpful

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I had one alpine type r in a walmart box and was very disappointed. So I decided to get a second one and put them in a ported box designed to spec. WOW what a difference. I was bumping so hard my rear view mirror fell off! I would definitely recommend this sub just make sure you buy a ported box from sonic instead of settling for a walmart box!!

11 of 20 found this helpful

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Don't bother looking anywhere else. Just click and buy. This sub is mental, an it keeps on going and going, giving birth to hard, deep and tight Bass! Im only running 400w rms on it in a sealed enclosure and my neighbors hate me. Can't wait for summer time in London! If you want to be that guy cruising with loud bass, then this is your tool to make it happen. WE LOVE BASS!

11 of 20 found this helpful

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Holy crap i was at b*st b*y amd saw this and was like well ill give it a try and i shook my big mirror out of place on the drivers side but not only does it shake everything it delivers the bass that you need to hear!!

6 of 10 found this helpful

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This is the best overall sub for the money. I have 2 of them in a custom ported box that cost more than the subs! They are perfect for my pontiac g5 2009, but i also picked up a kinetic hc 1800 to help with the power issue and the dimming. LOVE THE NEW SIZE it saved space in my trunk! Oh and sonic does have the lowest price and free shipping!

8 of 14 found this helpful

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I wanted a sub with high output and good SQ at a low price, after doing a lot of research, I decided on this woofer. I tossed it into a 1 cubic foot sized sealed box as recommended by Alpine for SQ (I mainly listen to rock music). I juiced it with an RF bdCP 1000, 900 watts at 4ohm.

I used to own 2 RF 12's powered by the first model Bd1000. This single 12 hits at least 70% as hard and has better sound quality.

I bought one more of these, and I'm thinking of sending it back, a single one is so loud. ( I will probably keep the extra one and hook it up)

I havent tried wiring this sub at 2ohms (My amp gives 1500 Watts at 2ohms) But I would imagine it would probably sound even better.

This sub sounds good for rock and rap, but for some reason, it makes techno and dance music sound great. It feels just as bulletproof as it looks in the pictures.

10 of 18 found this helpful

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I have two of these subs, with each one being powered by one PDX-M6 Monoblock 600 watt amp. They sound amazing. Very clean, tight sound that I hadnt experienced with my past sound systems. You wont find a better subwoofer in this price range. Currently, I'm running 600 watts to a sub that runs at 600 rms, and it appears to be a perfect match in conjunction with the rest of my system, as I want a clean, blended and loud sound, not huge Boom Boom from the trunk and nothing else being heard. If you're like me, you read nearly every damn review before you punched in that credit card. Buy them!

3 of 4 found this helpful

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I have this hooked up to a Powerbass XAX-1200d or something like that and I'm so impressed with both. i have this in a sealed box in my prelude and its so loud! I have one of these and all my friends think its awesome and it hits the notes I want it to. its quite heavy...but then again its a sub haha but it looks clean in the car and makes my rear view mirror start to fall haha. Everyone at the installation shop I went to was asking what i had and were trading in their Kenwoods and MTX and Pioneers for this. highly recommend this sub. i have not looked back on my purchase at all. i just wish it was a little more flashy...i love the simplicity but a little something more i think would be acceptable also. btw i listen to all sorts of music. im from LA so im big on hip hop and rock. this sub in a sealed box with my amp is just perfect. GET IT!

8 of 14 found this helpful

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i just put one in my 2004 cavalier last night and it bangs for sure. it was an upgrade from two 10" audiobahns and it hits just as hard straight out the box. i cant wait til its broke in so i can turn my amp up. i think im gona stick with alpine from now on. definitely recommend to anyone especially for the price.

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These things are beasts. If you can't afford the really expensive stuff go with these. They won't dissapoint you. I started with one of the older models and it pounded on my amp pretty nasty for a single 12". Kind of reminded me of my w6 in a way. Now I have the newer model to go with it. I have the Kicker 750.1 running them in a sealed box in a Camry and its not enough by far. It sounds like one still. I have everything wired to the lowest ohms I can get em. I wish I would've gotten the 2 ohm ones to give em a bit more power, but I can't complain. I think they would be better off with a slot ported box but they sound very clean the way they are. With the right amp and set up you can run just one of these and be happy.

6 of 11 found this helpful

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I bought 2 of these. Threw them in custom 1.7cu Per ported box. Cant beat it. I have them in an escort. Got my windshield and my wipers shaking like crazy. I have them on an alpine MRP-M2000 and I am very satisfied.

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I bought this sub and made a downward facing sealed enclosure with about 1.25 cubic foot air space. Running a 2000 watt amp and it hits great! Good clarity, thump, and rugged build. It kills in my large truck. I wouldn't need another since it does what I need, but if I did I would definitely get another alpine.

2 of 3 found this helpful

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Awesome subs. I have two of these in my 06 explorer with only 600 watt Sony pushing them because my other amp broke. They are in a fiberglass enclosure custom tuned to 34 htz. The subs with the amp and 2 guage wire and Optima battery surprisingly do plenty of shaking for me and I don't need any more power.

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I really like this product. It is loud and pretty crisp and I only have it on a 500 watt memphis amp. It does smoke a little when I turn it up but im pretty sure thats my very old amp, and not the sub at all. I didnt like how the bannana clips for bridging the voicecoils felt so I just used speakerwire. They were just very loose. I listen to hip hop, punk, rap, dubstep and it compliments them all very well. Oh and if youve never listened to dubstep on subs then dont hate on it just yet. Its totally different. It is really about the bass you just dont get on headphones. Lol

10 of 20 found this helpful

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I have one in a 2009 Ford Escape for my wife. It's running off a pr2.100 Memphis 2 channel bridged at 300 rms. This sub is by far not getting enough wattage but the sound and clarity is superior than 2 PR Memphis 12's. This one sub is plenty for her car and I recommend this for all. This sub is well worth 200.00 range easily. I fiberglassed a box with 1.9 cu internal vented tuned at 32hz. This is a 5 star sub.

5 of 10 found this helpful

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I am running 4 of these puppies in my ford with about 7000 watts. These subs are drop dead sexy with HQ bass. If you want bass that will shake the crap out of your can + 4 blocks away these are the cheapest subs to do so. BTW you dont need to let these subs warm up in the winter, even tho its still a good idea.

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My brother owned two of these in a ported box being pushed by an Alpine MRP-1000 amp. i was getting a 5 star back massage in the front seat! he recently switched to CVX's but id say these subs are in the same class as those are. really a lot of bang for your buck.

2 of 4 found this helpful

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Use to own 2 of these bad boys and had them in a slot ported enclosure in my Delta 88... never regreted the purchase because they stood up to their reputation in both SQ and SPL.. I would probably still have these if they hadnt been stolen from my brother when I loaned em to him to sell after my car got trashed... they last, sound great, and can play all spectrums of music accurately and clearly!!!

2 of 4 found this helpful

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I went head and got 2 of these with a hifonics brz1200 and did a custom ported box. box alone is big enough for 2 15s so for these 12s they HIT!!!! I have them in a chevy tahoe its flexing wipers, sunroof, side doors, and back hatch rattled so bad had to do 5 sheets of dynamat. overall get these they are crazy loud

2 of 4 found this helpful

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I bought these subs a couple of days ago and they BANG. My system is the loudest I have ever herd and I installed it for less than anyone I know with subs that are wayyy cheaper because of Sonic Electronix. And not to mention when I play rock and even old songs by the Beatles they add so much depth to the songs it's amazing. Like my studio speakers! 100% recommend these.

2 of 4 found this helpful

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I wanted a sub that could meek my quality standards of rock music but i also wanted to be able to beat the block down with some bass if i had to and this sub does exactly that! I have two of them in a ported box and the make my windshield have excursion! Do not take a second guess just get it and you will be happy! Trust me

2 of 4 found this helpful

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i bought this sub a while ago but bought a truck so i never quite had enough room for all my stuff and a big 12" ported box so i sold it to my friend. he has this sub in his trunk and even with the seats up it still bumps hard. He has it in a ported box and it really sounds good. He has it on an alpine mrp-m500 and you can tell it makes the sub happy just by how clear and loud it gets.

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i have one of these bad boys in my car hooked up to a 500 alpine mono block. this thing bangs. i have it in my jeep liberty in a 1.5 cubic foot ported box. all i have to say is wow!!!!!! i get out of my car sometimes with my ears hurting. i plan to get a second one and another amp to power it. one is perfectly good for your car, but if you want to get some nice comments from your friends get two. you will not go wrong.

1 of 2 found this helpful

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Pushes great bass and with that 20% reduction i think it is a sub basically for anyone. i have one in a custom built box in my 1978 Ford F-150 ranger XLT and it has great sound quality and amazing bass. Alpine has a great product on there hands!

1 of 2 found this helpful

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I listen to one of these all the time in my friend's car. It slams! He pushes it past the rms too often but this subwoofer handles it well. I have seen this sub pushed obviously past it's limits for a couple minutes straight and it is DURABLE! Luckily, it just wont blow. The sound quality isn't there. I have W3's and they are noticeably cleaner. If you put this in the right size ported box, it is well worth the money.

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I bought these to replace my kicker cvr 12s, thinking higher x max would allow them to hit deeper than the kickers.I put them in sealed boxes and run each one with a Kicker 750 amp. They dont sound as loud and are distorting when turned up.Might be bad amp match up or I need ported box? I have however heard one of these subs in someones car ported and it sounded great so that is probably the answer.

2 of 5 found this helpful

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I have four of these in a sealed quad box hooked up to a single alpine mrp-m2000, thats 500 watts per subwoofer, an alpine head unit with monster 400 series wires, optima yellow top battery and a kinetik's hc600 and all i have to say is god damn in the words of e-40 "my s*** bangs" great subs this is the 3rd system that ive had 12" typr r's and ive never been disapointed. I had a single original 12" type r in my caviler with a directed 1100d blew it but thats bound to happen when you double the rms to your sub then i bought two of then next series same directed 1100d in the same car sold them for 15 kicker l5's "dump stupid idea!" now i have four of the current models 2011 little r's 100 more rms then the last two series so yeah i know what i'm talking about when i say buy these muthaf***** subs they take a beating and sound great and for a this price s*** you would have to be stupid to pass them up!

1 of 3 found this helpful

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These things pound. I currently have a Kenwood eXcelon 794x running to these subs and make them absolutely crisp. I have a Hifonics Brutus 1200 RMS and let me tell it pushes the subs to the max and you cannot tell they are not slowing down one bit. For the price and quality I would highly recommend these subs to anyone who is looking for sum slap.

1 of 3 found this helpful

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I just purchased 2 of these a few weeks back to replace my 2 kicker cvr's and there is clearly a noticeable difference in spl, these things pound hard! I have them in a ported box and the amount of air these things can push is almost ridiculous. I have them wired at one ohm running off a 1000 watt MB Quart amplifier which I also got from sonic and I am completely satisfied with my purchase. I would recommend these subs to anyone! Great spl and also great sq! Apline rules! =)

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Just installed one with an mrp-m500 and it hits good. Bought some more for me and accidentally spilled some epoxy on it. When getting the epoxy off, it peeled some of the cone with it which is when I noticed that the cone is not really "kevlar" but pressed paper with a metallic paint coat on top. Other than that, its a great sub...just wish alpine didn't twist the truth

2 of 6 found this helpful

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Previously, I had a 15" Kicker Comp, and I loved it but it was too big and took up too much trunk space, so this time around I wanted something smaller and louder. I got it! This is a great sub woofer and will not disappoint, I couldn't be more pleased.

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My friend purchased this and i helped him install it into his mustang. he didn't want crazy bass so he got one. Not even broken in yet and its ridiculous for 1 sub. Sound quality is great and its still very loud. i would recommend this to people that want good deep quality bass.

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This is a great sounding sub and can a Lil more power than it is rated. have it wired @ 2 ohms n a ported box running off an alpine m500 amp. also tryed it on an alpine m650 n it handled it with ease. would recommend to any1 who loves tight clean bass

2 of 7 found this helpful

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Alpine Subs just rock, I have had Kicker CVR,CVX, and L7s, DD, Rockford, and JL W7s sure those are good subs great SPL so so sound quilty. For the price Alpine can't be beat nice SPL but also amazing sound quality ever at max volume, if you thank there not good it is prob your box you need to always have a custom box built for your car/suv for your subs to be the best they can, sure a prefab box works but the box makes night and day in quality. I have two in a custom 4 cf box ported around 30hz for SQ the higher the port the more SPL but the less SQ. There running off a clarion PDX11500 1500w RMS at 1 Ohm and its more then then Kicker L7 15" I just took out. Will always buy Alpine as long as they keep up the great work.

1 of 5 found this helpful

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I have this in a SonicElectronix slot ported box and wow does this put out some serious SPL's with 600 clean watts from an old Diamond Audio D5 600.1 amplifier wired in parallel. This combo sounds and feels like it's going to rattle my Civic Si Sedan to pieces. I am going to need some serious Dynamat to keep it all under control! I highly recommend this sub. There simply isn't anything better in this price range.

2 of 7 found this helpful

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I'm running one of these with the 600watt amp made for this sub, and it sounds excellent.. actually made some plastic clips in my car rattle loose causing plastic parts to detach lol. Great sub just give it proper time to break in, I blew a 1242D (previous years model) by pounding it too early in the break in process. Once its broken in, it can put out a lot of bass for a long time without overheating or anything weird like that.

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The new third generation Alpine Type R has some pretty nice changes from the last one, like a higher RMS rating to be the best change, a slightly more shallow mount design, and a better motor cooling system... But the bottom line is this thing pounds hard for such a good price.

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this thing pounds...i had one hooked up to rockford fosgate 500 rms amp..and it rocked this sub to h***...it pounds the heck out of my car...1 is all you need. if your looking for ridiculous bass get yourself a couple of these..you can run them on 2ohm at 500+rms and this things takes it like a champ

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These subs are a great deal. They are built with amazing quality and they are cheaper than almost any sub in it's class. I have two of these with a Hifonics HFI2000d amp and they pound. Make sure you give them enough power though, otherwise they won't play at all.

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The head unit i ordered was delivered on time. I am very pleased with it. I love all of the features and the price is unbeatable. I would highly recommend this unit and Sonic Electronix to everyone. no need to shop anywhere else.____

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Alpine SWR-1243D

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